Article
Chemistry, Inorganic & Nuclear
Sanchaita Dey, Arijit Singha Hazari, Shaikh M. Mobin, Goutam Kumar Lahiri
Summary: In this study, a series of non-chelated BTD-bridged diruthenium(II) and triruthenium complexes were synthesized and characterized, and their properties in different coordination modes were studied. These complexes exhibited metal-based anisotropic electron paramagnetic resonance and intense low-energy intervalence charge-transfer transitions in the near-infrared region.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Akhil Bhardwaj, Bhaskar Mondal
Summary: This study strengthens the concept of weakening the N-N bond through electronic excitation and explores the potential of photochemical N-2 activation via alternate N-N pi-photoactivation route using bimetallic end-on mu(2)-eta(1):eta(1)-N-2 bridging dinitrogen complexes.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Luke J. Williams, Yunas Bhonoah, James W. Walton
Summary: A series of complexes with the general formula [(eta(6)-arene)RuCp][PF6] were synthesized, and the reactivity of the arene ring towards intermolecular nucleophilic aromatic substitution (SNAr) reaction with cyclic 1,3-diones was studied. Competition experiments revealed the leaving group ability of the aryl halides and nitroarenes, with the order of F >> NO2 > Cl > Br. Rapid photolysis reaction freed the arene rings quantitatively after SNAr reaction (<15 min).
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jerome Tisaun, Baptiste Laramee-Milette, Joseph S. Beckwith, Jakob Bierwagen, Garry S. Hanan, Christian Reber, Andreas Hauser, Cecile Moucheron
Summary: The ligand PHEHAT presents structural asymmetry that affects the photophysical properties of metal ion chelation, leading to different behaviors in [Ru-II(phen)2)HATPHE](2+) and [Ru-II(phen)(2)PHEHAT](2+). The latter exhibits two bright states, with the lower state being weakly or non-emissive depending on solvent and temperature. Experimental and theoretical analysis is crucial to fully understand this intriguing photophysical behavior.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Applied
Rais Ahmad Khan, Amal AlFawaz, Nida N. Farshori, Anup Paul, Mohammed H. Jaafar, Ali Alsalme
Summary: Two organometallic ruthenium (II) complexes containing analogs of aminobenzimidazole were synthesized and characterized. Their binding affinity with human serum albumin and cytotoxic potential against cancer cells were evaluated. One of the complexes showed promising cytotoxic properties, indicating its potential as an anticancer therapeutic.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yong Wang
Summary: A series of cyanide-bridged complexes were synthesized and characterized in three different redox states, revealing systematic changes in electronic structure and properties. The metal-to-metal charge transfer in the one-electron oxidation product 2 is attributed to Ru-II and Fe-II -> Fe-III transitions, while that in the two-electron oxidation product 3 is mainly attributed to Ru-II -> Fe-III transitions. Electron delocalization was observed in complexes 2 and 3, with stronger conjugation present in 3.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Divya Rajah, Michael C. Pfrunder, Bowie S. K. Chong, Alexander R. Ireland, Isaac M. Etchells, Evan G. Moore
Summary: A visible light-absorbing chromophore appended with a dipicolinic acid Ln(III) chelator was prepared and complexed with different lanthanide cations to form d-f assemblies. Unexpected decrease in Ln(III) chelate complex stability was observed, leading to the formation of 1:1 Ln(III)-ML complexes instead of desired Ln(ML)(3) complexes. Sensitised NIR emission from Yb-III, Nd-III, and Er-III complexes was observed upon excitation of the Ru-II based metalloligand in the visible region.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Md. Elius Hossain, Zhifang Guo, Jun Wang, Glen B. Deacon, Peter C. Junk
Summary: Eta(6)-arene(iodidoaluminato)lanthanoid(II) complexes have been synthesized by reacting aluminum triiodide, corresponding lanthanoid metals, and 1,2-diiodoethane in toluene. These complexes are polymeric and the coordination modes of the lanthanoid(II) atoms vary. Alkaline earth(II) (eta(6)-arene)iodidoaluminate complexes have also been obtained using a similar method. The crystal structures of these complexes have been determined for the first time.
Article
Chemistry, Inorganic & Nuclear
Chi-Ho Lam, Wai Kit Tang, Vivian Wing-Wah Yam
Summary: In this study, a novel tetranuclear copper(I) complex was designed and synthesized, which exhibited intense and long-lived phosphorescence in the solid and solution states. The complex showed strong reducing power in the excited state, as demonstrated by oxidative quenching studies. Additionally, the transient absorption difference spectrum analysis revealed characteristic absorption and intervalence charge-transfer transitions in the complex.
INORGANIC CHEMISTRY
(2022)
Article
Polymer Science
Nicholas Sheng Loong Tan, Gareth L. Nealon, Stephen A. Moggach, Jason M. Lynam, Mark Ogden, Massimiliano Massi, Andrew B. Lowe
Summary: Rh-(tfb)(biph)(PAr3) is a catalyst for the controlled, stereospecific copolymerization of arylacetylenes, characterized by its slightly distorted square-planar geometry and stability in solution. Computational studies indicated its enhanced p-acidity and binding affinity for phenylacetylene compared to the 2,5-norbornadiene analog.
Article
Chemistry, Inorganic & Nuclear
Chris Douvris
Summary: This study reports the synthesis and characterization of the first trifluoromethylated (eta(6)-arene) transition-metal complex, which holds great potential for important theoretical and industrial applications in various chemical reactions.
JOURNAL OF FLUORINE CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Suguru Murakami, Ryosuke Matsubara, Masahiko Hayashi
Summary: The synthesis and X-ray structures of three new [Cp*Ru(η1)-ArCN)(3)]PF6 (Ar = aryl) complexes are reported, which are thermally converted to [Cp*Ru(η6)-ArCN)]PF6 (Ar = aryl) sandwich complexes and subsequently recovered by UV light irradiation. Additionally, trans-selective hydroboration of internal alkynes using the synthesized complexes is disclosed.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Christina Georgakopoulou, Dimitrios Thomos, Theodoros Tsolis, Konstantinos Ypsilantis, John C. Plakatouras, Dimitris Kordias, Angeliki Magklara, Constantine Kouderis, Angelos G. Kalampounias, Achilleas Garoufis
Summary: This study synthesized and characterized novel binuclear hexa-arene-ruthenium(II) complexes and investigated their interactions with DNA and cytotoxic activities against cancer cells.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Olga Impert, Anna Kozakiewicz-Piekarz, Anna Katafias, Maciej Witwicki, Urszula K. Komarnicka, Katarzyna Kurpiewska, Rudi van Eldik
Summary: Two new ion-pair complexes were synthesized and their properties and purity were characterized using various analytical techniques. The spectral characteristics and redox behavior of these complexes were examined, and their EPR spectra were found to be different from previously reported analogs. The presence of an unpaired electron was confirmed by DFT calculations.
Article
Chemistry, Inorganic & Nuclear
Patricia S. V. B. de Almeida, Henrique Jefferson de Arruda, Gleyton Leonel S. Sousa, Felipe Vitorio Ribeiro, Jose Aleixo de Azevedo-Franca, Larissa A. Ferreira, Guilherme P. Guedes, Heveline Silva, Arthur E. Kummerle, Amanda P. Neves
Summary: Ruthenium complexes have shown potential as antitumor compounds with enhanced cytotoxic activity, DNA interaction capabilities, and ability to quench fluorescence emission. The complexes have been synthesized and evaluated for their effectiveness against tumor cells, showing promise as a more efficient and selective treatment option for cancer.
DALTON TRANSACTIONS
(2021)
